public class 水仙花 {
    public static void main(String[] args){
        int num = 153;
        int hundreds = num / 100;
        int tens = (num % 100) / 10;
        int units = num % 10;
        int sum = (int) (Math.pow(hundreds, 3)
                + Math.pow(tens, 3)
                + Math.pow(units, 3));

        System.out.println(num + "是水仙花数吗？→ " + (sum == num));
    }
}
